WASD or arrows to move. the idea was to make a code that would create a tile-based on what was around it. the result? instead of a world with things that are completely random and incoherent, blues will tend to group around each other, as reds will stick with reds, etc... this can easily be turned into a terrain generator by creating weighted randoms so that some elements of the world (green for example) will be much more common than others (such as red).
all credit for the pen scrolling go to Griffpatch_tutor for his pen tile scrolling test found here: https://scratch.mit.edu/projects/89298748/ pretty much all I did was add more tile types and change the randomizer a little. BTW if you know how to make a hyperlink to someone else's profile and project please tell me I can't figure out how to do it in Scratch.